#0D99BB
Closest named color: Blue NCS (#118AB2). oklch(63.3% 0.114 221.4), rgb(13, 153, 187).
Aa
Black text reads best on this color (6.29:1).
About this color
#0D99BB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 63%, its chroma 0.114 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.043 away. Black text reads best on it, at 6.29:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 6.29:1 |
| White text | 3.33:1 |
Values
| HEX | #0D99BB |
| RGB | rgb(13, 153, 187) |
| HSL | hsl(192, 87%, 39%) |
| OKLCH | oklch(63.3% 0.114 221.4) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #0D99BB | 3.33:1 | AA large text | Lc -65.7 | Content text, not long reading |
| Black text on #0D99BB | 6.29:1 | AA | Lc 43.8 | Non-text elements, placeholder text |
| #0D99BB text on white | 3.33:1 | AA large text | Lc 60.2 | Content text, not long reading |
| #0D99BB text on black | 6.29:1 | AA | Lc -41.5 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DFEDF2
oklch(93.7% 0.016 221.1)
-
Step 200
200
#C4DEE8
oklch(88.5% 0.031 222.9)
-
Step 300
300
#99C9DA
oklch(80.8% 0.056 221.7)
-
Step 400
400
#5AADC8
oklch(70.6% 0.09 221.6)
-
Step 500
500 (this color)
#0D99BB
oklch(63.3% 0.114 221.4)
-
Step 600
600
#00809E
oklch(55.6% 0.103 221.9)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#00495C
oklch(37.6% 0.07 222.6)
-
Step 950
950
#032B37
oklch(26.9% 0.048 223)
#0D99BB with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #8595BD | 0.093 |
| Deuteranopia (no green cones) | #7086BB | 0.082 |
| Tritanopia (no blue cones) | #00A4A4 | 0.055 |
| Achromatopsia (no color) | #8D8D8D | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D99BB
#0D99BB
oklch(63.3% 0.114 221.4)
- #C47151
#C47151
oklch(63.4% 0.115 41.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #0D99BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.043
- Teal Green #0A9396 ΔE 0.056
- Teal Blue #01889F ΔE 0.059
- Cool Blue #4984B8 ΔE 0.062
- Dusty Blue #5A86AD ΔE 0.062
- Faded Blue #658CBB ΔE 0.062
- Sea #3C9992 ΔE 0.063
- Water Blue #0E87CC ΔE 0.064
Use #0D99BB in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.